From 273f7e42994a5bce0614d04d96dbfdf05fd652e5 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Sat, 3 Jul 2010 00:04:37 +0000 Subject: Detect and handle COPY in many places. This code is transitional, it will soon be possible to eliminate isExtractSubreg, isInsertSubreg, and isMoveInstr in most places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107547 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/OptimizePHIs.cpp | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'lib/CodeGen/OptimizePHIs.cpp') diff --git a/lib/CodeGen/OptimizePHIs.cpp b/lib/CodeGen/OptimizePHIs.cpp index 2717d4d5ce..1613fe21e4 100644 --- a/lib/CodeGen/OptimizePHIs.cpp +++ b/lib/CodeGen/OptimizePHIs.cpp @@ -107,6 +107,11 @@ bool OptimizePHIs::IsSingleValuePHICycle(MachineInstr *MI, SrcSubIdx == 0 && DstSubIdx == 0 && TargetRegisterInfo::isVirtualRegister(MvSrcReg)) SrcMI = MRI->getVRegDef(MvSrcReg); + else if (SrcMI && SrcMI->isCopy() && + !SrcMI->getOperand(0).getSubReg() && + !SrcMI->getOperand(1).getSubReg() && + TargetRegisterInfo::isVirtualRegister(SrcMI->getOperand(1).getReg())) + SrcMI = MRI->getVRegDef(SrcMI->getOperand(1).getReg()); if (!SrcMI) return false; -- cgit v1.2.3-18-g5258